Wow there's a lot of good stories on here. Ouch.
I've personally never hooked "myself" too bad. (Knock on wood) However when I was a kid, about 4 or 5, I walked behind my dad when he was casting a spinnerbait & got it through my bottom lip. Still have a little scare to prove it. Don't really remember it but I'm sure I cried like crazy.
My dad on the other hand has been hooked pretty bad before. We were stripper fishing & he landed a pretty nice one about 9-10lbs. When he reached down to unhook the pencil popper it flopped off the boat. Well my dad attempted to catch it only to get one of the treble hooks through the base of his thumb nail & out the other side. The worst part was that the fish was still attached flopping around, while hanging from his thumb nail, trying to get loose. Once he pulled the fish back on the boat & got it off he was white as a ghost. That was the end of that fishing day, & off to the hospital to get it removed.